Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [hdmi]

HDMI stands for High Definition Multimedia Interface. Along with the Composite RCA, HDMI is one of the devices' two video outputs. It provides high quality digital video.

1
vote
0answers
7 views

Is it possible to adjust the backlight of a DELL U2414H monitor connected via HDMI?

I have a magic mirror I'm building that has a RPI at it's heart but even with the screen blanked at night, I can see the backlight glowing. Is there any way to adjust backlight brightness via the ...
0
votes
0answers
17 views

How to extend desktopacross to HDMI panels HDMI only

So with two waveshare 7" touch panels HDMI panels, an HDMI splitter and a raspberry pi zero w, I can mirror the display. I am not sure how to extend the screen across two HDMI panels. Does anyone ...
1
vote
0answers
11 views

How do I stop my HDMI going off

for some reason, after a while the screen connected to my RPI 3B+ goes off, and stays off, until I unplug it and plug it back in again. I only run in console mode, and running alt+F[1-4] does nothing,...
0
votes
0answers
18 views

HDMI port is not working

I have been using an RPI3B+ for around 2 months . I used it remotely most of the time. Recently, when I was trying connect it with a monitor via HDMI to VGA converter , it didn't work at all. I ...
1
vote
0answers
19 views

Ethernet speed: Screen ON vs screen OFF

I've a Raspberry Pi 3 B+ with Ubuntu 18.04 installed. With an SSH connection with my Kubuntu PC, the transfer is good (4.5Mo/s) when RPi's screen is OFF (via xset dpms force standby) but if the RPi's ...
0
votes
0answers
20 views

Weird output on 10.1" HDMI/USB touchscreen (Waveshare)

I have an HDMI+USB 10.1" screen connected to Pi. When used only HDMI is work fine but when pluged usb (touch) the display weird output.
1
vote
0answers
20 views

My raspberry pi 3+ suddenly stopped displaying

I've been using this raspberry pi for months to run LibreELEC to run Kodi. One day it didn't let out a HDMI signal. I no longer am able to a HDMI signal at all, my SD card is fine, I even reinstalled ...
1
vote
1answer
20 views

HDMI Screen interference and intermittant blinking

OK, Befote I describe this issue. Here's the setup.. RPi3B+ with external USB HD boot, The PSU is a TracoPower (professional) 5A PSU. The RPi power LED is not blinking nor lightening symbol on screen. ...
1
vote
0answers
14 views

Unable to get HDMI connection via Raspberry Pi 3 B+

I have a Raspberry Pi 3 B+ model and a FLATRON W20437 LG monitor along with a 5V 2.8A Power Supply and a keyboard. After I load the contents of Raspbian OS with stretch on the SD Card (32 GB Samsung ...
1
vote
1answer
93 views

How to Connect Raspberry Pi 3 to Laptop via Ethernet Cable

How do I display Raspberry Pi 3 screen onto laptop? I followed instructions to set up Raspberry Pi here, https://projects.raspberrypi.org/en/projects/raspberry-pi-setting-up I got up to here, https:...
1
vote
3answers
84 views

Video output filter

I would like to be imbed a filter in the Pi’s HDMI output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -> ( )). I need it to be active even in the ...
0
votes
1answer
29 views

How can I switch the TV to the Pi's HDMI input on a key press/mouse click?

I've got a TV with an Apple TV, Pi, and a PS4 plugged into it. Both the Apple TV and the PS4 switch to their HDMI inputs when I click the remote or turn the controller on. How can I achieve the same ...
1
vote
1answer
66 views

A working HDMI switch for Raspberry PI 3?

I have a Pi 3 and regular desktop computer with a single (DVI input) monitor. The desktop and Pi both have HDMI out for video. I use an HDMI > DVI cable to connect whichever device I want to use to ...
0
votes
1answer
26 views

Software adjustment of gamma/brightness settings in Raspbian

I am trying to find a way to control the apparent brightness of my external screen on Raspbian Stretch. In my situation, there is no need to actually control the backlight, as I only want to change ...
1
vote
0answers
24 views

EDID problem with different monitors

I've got 2 monitors I use with a pi. The HP monitor self identifies root@raspberrypi:/home/pi# tvservice -n device_name=HWP-HP_L1755 & it is happy with the preferred hdmi settings root@...
0
votes
1answer
26 views

Control GPIO from HDMI V sync

My Project on a Raspberry Pi 2 with Raspian stretch. I want use a GPIO pin to drive 3d shutter glasses (glasses hacked to receive 0 _3V square wave) Video playing on the HDMI port and A Pin goes on ...
0
votes
2answers
62 views

Raspbian Stretch lite doesnt send HDMI signal on second boot

I have installed the most recent Raspbian Stretch lite (release: 2018-11-13) to a SanDisk ultra A1 micro SD card to use it for my Raspberry Pi model 3B. I connected a HDMI monitor and a USB keyboard ...
1
vote
0answers
45 views

How to configure duplicate screen on a Pi?

I have a Raspberry Pi 2 connected with a TouchScreen. I also connect another external display via HDMI. Goal I've been trying to make my external display show as duplicate mirror the one on the ...
1
vote
0answers
64 views

SONY TV as Display / Monitor

Background: I have successfully used pi-3b+ to display on LG LED TV, New model Sony 4K LED TV. Requesting your support: The year 2011 SONY 40NX710 model is showing blank (No desktop / text-console). ...
1
vote
1answer
69 views

Can I connect two Raspberry Pis to one 5" Display via an HDMI switch?

I have two Raspberry Pis running very different systems. I want to build an enclosure so that I can use a single 5" display (Amazon link) for both Pis. The setup I'm envisioning would rely on an ...
1
vote
0answers
58 views

Raspbian Stretch doesn't show any display on boot

I installed the image of raspbian stretch (version: 9) on an SD card and mounted the card on the Raspberry Pi. On first boot the display came up and the initial setup was done. In addition to the ...
0
votes
0answers
17 views

Any difference between using HDMI versus composite for fbcp?

Is there any tangible difference at all between using composite video and HDMI to copy to a TFT with fbcp? It would be done with hdmi_force_hotplug=1 and hdmi_ignore_hotplug=1.
0
votes
1answer
65 views

Raspberry Pi Touch Screen - I can't do anything

So, I recently bought a UCTRONICS LCD 3.5 in. touch screen for the Raspberry Pi (I have a Raspberry Pi 3 with Raspbian Stretch), and attaching it and getting it to turn on worked just fine. I ...
1
vote
0answers
12 views

No video on SV-3 instrument viewer

When I set the Pi (Zero) up with the required 640x480 60Hz mode in config.txt the SV-3 reports no signal. But if I plug a VGA Acer monitor in to the Pi and then unplug it, plugging in the SV-3 works! ...
-1
votes
1answer
23 views

No HDMI Output on Raspberry Pi 2B

I am a complete beginner, an have been having some issues with a Pi 2B. I was helping my school librarian set up a message display. I got a Pi, downloaded the OS, and used Etcher to put it on a USB ...
1
vote
1answer
118 views

Pi 2 won't boot without touchscreen connected

Timeline of events: Installed a stable version of Raspbian, all systems work no real testing with the GPIO but HDMI and SSH work. Tested various GPIO pins for running fans and several pieces of ...
0
votes
0answers
29 views

Resolution problem in 5 inch screen

I have one 5" screen, when I connect it to my Raspberry Pi see like this: But when I connect it to my computer the screen works well: I tried with change the parameter in video section in config....
0
votes
0answers
12 views

Multiple delayed output from pi camera

I’m trying to create up to 4 delayed outputs from the pi camera. The length of the delay needs to be varied 15-60 seconds. Is there a way to buffer the cameras feed and use the same buffer for all the ...
1
vote
1answer
115 views

Raspberry PI not accessible without HDMI plugged in

I have a Raspberry Pi 3. For whatever reason, it doesn't seem to boot up if the HDMI cable is not plugged in. I am running the latest "stretch" desktop version. Steps taken: 1) Plug in AC adapter. ...
0
votes
2answers
70 views

Weird resolution

So, im new to the raspberry pi. When i first started it and installed the raspian os with noobs, it had fine resolution. But then i rebooted, and for some reason the noobs menu was in alright ...
0
votes
1answer
44 views

Pi Zero HDMI Problem

I have problem with connecting pi zero to tft screen over hdmi. I tested hdmi cable, config file(same sd card) and tft screen with Pi 3B, I tested micro hdmi adapter(which connected to pi zero) with ...
0
votes
1answer
236 views

Elecrow 7" HDMI screen reports No Signal

I'm attempting to get an Elecrow 7" HDMI LCD touchscreen (Amazon UK) to work with my Raspberry Pi 3 B+. Upon following the instructions enclosed with the screen, all I see is "No Signal". The ...
0
votes
1answer
109 views

Couldn't get a display on the screen when using the RPi

I had a long time I didn't get my hand on the RPi. I got the Emlid image burned on a 8gb micro sdcard using the dd command. I have the pi connected to a the screen using HDMI to VGI cable, but I get ...
1
vote
1answer
34 views

Why does screen go blank while wifi data is being transmitted?

I got a Raspberry Pi 3 B+ with 2.5A power supply that came with it. I've connected a VGA monitor (via an HDMI-VGA adapter) and keyboard to it, and connected it to the WiFi. From the beginning, the ...
1
vote
1answer
47 views

Is there a way to detect if the AUX port of the Raspberry Pi 3 Model B+ is in use?

We are trying to detect if the AUX (3.5mm) port of the Raspberry Pi is in use so we can automatically swap the output sound to either that or HDMI. If there is no straight answer, are there any ...
0
votes
1answer
515 views

HDMI-CEC: switch the device to the port where Raspberry is connected

I am using my Raspberry only for a Spotify connect client (Raspotify), the device connects to an AV Receiver which has a number of HDMI ports. After 2 days of trial and error I managed to figure out ...
1
vote
0answers
605 views

Raspberry Pi 3 Model B+ goes to black screen after a short while of inactivity

It ranges between 10 to 30 minutes. It is attached to a TV via HDMI. The monitor will go black. Moving the mouse of tapping the keyboard of the Raspberry Pi will "wake up" the screen pretty quickly. ...
1
vote
0answers
57 views

3.5in TFT screen hat and Raspberry Pi 3+b

I'm trying to understand something about the MPI3508 screen I purchased (https://www.amazon.ca/dp/B07DQKQG6X). I tried powering it via usb and connected a PC in its HDMI input and got it working (the ...
0
votes
1answer
206 views

How to start xorg on a physically connected display via SSH?

The pi is configured to start into text mode so that no xorg libraries are loaded during normal operation. Yet I would like to be able to occasionally run a xorg desktop session when connected to an ...
4
votes
2answers
772 views

HDMI audio on Raspberry pi 3 b not working

I've already seen Audio over HDMI not working on Pi 3 (audio not working though HDMI, but working though speakers) but the actions described by @Vader did not work for me. The fact is that it ...
1
vote
1answer
182 views

Display controller for HDMI shows no signal only for Raspberry

I'm bought a (notebook) display LP171WP4 (TL)(01) and a display controller. Both are working if I connect it to my Macbook via HDMI. But with the Raspberry PI 3 B it doesn't work. The display is on ...
-1
votes
0answers
622 views

OpenCV : Gtk-WARNING **: cannot open display:

I got a python script supposed to load a video. My Pi set up in headless mode and I would like not to use any X server for displaying the video but instead having the video displayed to the hdmi port....
0
votes
0answers
121 views

How to troubleshoot a permanently blinking green light on a Pi3b?

The green light on a Pi3b is blinking permanently, even after bootup. It outputs two flashes at a time for as long as the power is on. Is this normal? If not, how do I troubleshoot this? Background ...
1
vote
0answers
149 views

raspberry pi model b+ Not booting

I recently bought a raspberry pi 3 b+ from amazon and when I got it delivered the package was already opened, so I just want to check if my raspberry is working or not so I formatted a compatible sd ...
2
votes
2answers
1k views

HDMI vs DSI, pros and cons? [closed]

I am curious what the main differences are between using the HDMI output or the DSI connector to hook up a screen? I understand that HDMI carries audio while the DSI ribbon connection will not, and ...
-2
votes
1answer
24 views

how do i improve my HDMI resolution

my video resolution has always been great! but i downloaded a graphical interface for my pi Bluetooth and know i can not achieve a good picture on my hdmi to my tv the code was downloaded from sudo ...
-1
votes
1answer
360 views

Showing an image on HDMI (DSI, HDMI screens connected)

I have a Raspberry Pi 3B device connected to a LCD '7 (7 inches LCD, its a touch screen I believe that's called DSI not sure) and also a HDMI screen. By default Raspbian considers the LCD as the ...
1
vote
1answer
206 views

Monitor Displaying “No Signal” with RetroPie at Powerup

I'm in the process of building a game console using RetroPie and a Raspberry Pi 3. I'm connecting the Pi to a monitor via HDMI, and I'm powering both using a power strip with an on/off switch, to ...
1
vote
0answers
455 views

raspberry pi with 4k screen @1080p resulotion

I'd like to use 4k screen with RPi. I know that RPi can't handle 4k resolution so that is why I'd like to set resolution to 1080p. Screen will be playing videos/images (both prepared at 1080p) and my ...
0
votes
0answers
18 views

Pi zero no HDMI output on laptop [duplicate]

I am new to Rasberry pi and trying the first boot . I have formatted the SD card and have copied Noobs . I can see activity LED glowing and remains stable after a while. I have connected HDMI cable to ...